1 /*
2  * Copyright (c) 2018, 2019 Ori Bernstein <ori@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include <sys/types.h>
18 #include <sys/stat.h>
19 #include <sys/queue.h>
20 #include <sys/uio.h>
21 #include <sys/socket.h>
22 #include <sys/wait.h>
23 #include <sys/syslimits.h>
24 #include <sys/resource.h>
25 #include <sys/socket.h>
26 
27 #include <errno.h>
28 #include <err.h>
29 #include <fcntl.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33 #include <stdint.h>
34 #include <sha1.h>
35 #include <zlib.h>
36 #include <ctype.h>
37 #include <limits.h>
38 #include <imsg.h>
39 #include <time.h>
40 #include <uuid.h>
41 #include <netdb.h>
42 #include <netinet/in.h>
43 
44 #include "got_error.h"
45 #include "got_reference.h"
46 #include "got_repository.h"
47 #include "got_path.h"
48 #include "got_cancel.h"
49 #include "got_worktree.h"
50 #include "got_object.h"
51 #include "got_opentemp.h"
52 #include "got_fetch.h"
53 
54 #include "got_lib_delta.h"
55 #include "got_lib_inflate.h"
56 #include "got_lib_object.h"
57 #include "got_lib_object_parse.h"
58 #include "got_lib_object_create.h"
59 #include "got_lib_pack.h"
60 #include "got_lib_sha1.h"
61 #include "got_lib_privsep.h"
62 #include "got_lib_object_cache.h"
63 #include "got_lib_repository.h"
64 
65 #ifndef nitems
66 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
67 #endif
68 
69 #ifndef MIN
70 #define	MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
71 #endif
72 
73 static int
74 hassuffix(char *base, char *suf)
75 {
76 	int nb, ns;
77 
78 	nb = strlen(base);
79 	ns = strlen(suf);
80 	if (ns <= nb && strcmp(base + (nb - ns), suf) == 0)
81 		return 1;
82 	return 0;
83 }
84 
85 static const struct got_error *
86 dial_ssh(int *fetchfd, const char *host, const char *port, const char *path,
87     const char *direction, int verbosity)
88 {
89 	const struct got_error *error = NULL;
90 	int pid, pfd[2];
91 	char cmd[64];
92 	char *argv[11];
93 	int i = 0;
94 
95 	*fetchfd = -1;
96 
97 	if (port == NULL)
98 		port = "22";
99 
100 	argv[0] = GOT_FETCH_PATH_SSH;
101 	argv[1] = "-p";
102 	argv[2] = (char *)port;
103 	if (verbosity == -1) {
104 		argv[3 + i++] = "-q";
105 	} else {
106 		/* ssh(1) allows up to 3 "-v" options. */
107 		for (i = 0; i < MIN(3, verbosity); i++)
108 			argv[3 + i] = "-v";
109 	}
110 	argv[3 + i] = "--";
111 	argv[4 + i] = (char *)host;
112 	argv[5 + i] = (char *)cmd;
113 	argv[6 + i] = (char *)path;
114 	argv[7 + i] = NULL;
115 
116 	if (pipe(pfd) == -1)
117 		return got_error_from_errno("pipe");
118 
119 	pid = fork();
120 	if (pid == -1) {
121 		error = got_error_from_errno("fork");
122 		close(pfd[0]);
123 		close(pfd[1]);
124 		return error;
125 	} else if (pid == 0) {
126 		int n;
127 		close(pfd[1]);
128 		dup2(pfd[0], 0);
129 		dup2(pfd[0], 1);
130 		n = snprintf(cmd, sizeof(cmd), "git-%s-pack", direction);
131 		if (n < 0 || n >= sizeof(cmd))
132 			err(1, "snprintf");
133 		if (execv(GOT_FETCH_PATH_SSH, argv) == -1)
134 			err(1, "execl");
135 		abort(); /* not reached */
136 	} else {
137 		close(pfd[0]);
138 		*fetchfd = pfd[1];
139 		return NULL;
140 	}
141 }
142 
143 static const struct got_error *
144 dial_git(int *fetchfd, const char *host, const char *port, const char *path,
145     const char *direction)
146 {
147 	const struct got_error *err = NULL;
148 	struct addrinfo hints, *servinfo, *p;
149 	char *cmd = NULL, *pkt = NULL;
150 	int fd = -1, totlen, r, eaicode;
151 
152 	*fetchfd = -1;
153 
154 	if (port == NULL)
155 		port = GOT_DEFAULT_GIT_PORT_STR;
156 
157 	memset(&hints, 0, sizeof hints);
158 	hints.ai_family = AF_UNSPEC;
159 	hints.ai_socktype = SOCK_STREAM;
160 	eaicode = getaddrinfo(host, port, &hints, &servinfo);
161 	if (eaicode) {
162 		char msg[512];
163 		snprintf(msg, sizeof(msg), "%s: %s", host,
164 		    gai_strerror(eaicode));
165 		return got_error_msg(GOT_ERR_ADDRINFO, msg);
166 	}
167 
168 	for (p = servinfo; p != NULL; p = p->ai_next) {
169 		if ((fd = socket(p->ai_family, p->ai_socktype,
170 		    p->ai_protocol)) == -1)
171 			continue;
172 		if (connect(fd, p->ai_addr, p->ai_addrlen) == 0)
173 			break;
174 		err = got_error_from_errno("connect");
175 		close(fd);
176 	}
177 	if (p == NULL)
178 		goto done;
179 
180 	if (asprintf(&cmd, "git-%s-pack %s", direction, path) == -1) {
181 		err = got_error_from_errno("asprintf");
182 		goto done;
183 	}
184 	totlen = 4 + strlen(cmd) + 1 + strlen("host=") + strlen(host) + 1;
185 	if (asprintf(&pkt, "%04x%s", totlen, cmd) == -1) {
186 		err = got_error_from_errno("asprintf");
187 		goto done;
188 	}
189 	r = write(fd, pkt, strlen(pkt) + 1);
190 	if (r == -1) {
191 		err = got_error_from_errno("write");
192 		goto done;
193 	}
194 	if (asprintf(&pkt, "host=%s", host) == -1) {
195 		err = got_error_from_errno("asprintf");
196 		goto done;
197 	}
198 	r = write(fd, pkt, strlen(pkt) + 1);
199 	if (r == -1) {
200 		err = got_error_from_errno("write");
201 		goto done;
202 	}
203 done:
204 	free(cmd);
205 	free(pkt);
206 	if (err) {
207 		if (fd != -1)
208 			close(fd);
209 	} else
210 		*fetchfd = fd;
211 	return err;
212 }
213 
214 const struct got_error *
215 got_fetch_connect(int *fetchfd, const char *proto, const char *host,
216     const char *port, const char *server_path, int verbosity)
217 {
218 	const struct got_error *err = NULL;
219 
220 	*fetchfd = -1;
221 
222 	if (strcmp(proto, "ssh") == 0 || strcmp(proto, "git+ssh") == 0)
223 		err = dial_ssh(fetchfd, host, port, server_path, "upload",
224 		    verbosity);
225 	else if (strcmp(proto, "git") == 0)
226 		err = dial_git(fetchfd, host, port, server_path, "upload");
227 	else if (strcmp(proto, "http") == 0 || strcmp(proto, "git+http") == 0)
228 		err = got_error_path(proto, GOT_ERR_NOT_IMPL);
229 	else
230 		err = got_error_path(proto, GOT_ERR_BAD_PROTO);
231 	return err;
232 }
233 
234 const struct got_error *
235 got_fetch_parse_uri(char **proto, char **host, char **port,
236     char **server_path, char **repo_name, const char *uri)
237 {
238 	const struct got_error *err = NULL;
239 	char *s, *p, *q;
240 	int n;
241 
242 	*proto = *host = *port = *server_path = *repo_name = NULL;
243 
244 	p = strstr(uri, "://");
245 	if (!p) {
246 		/* Try parsing Git's "scp" style URL syntax. */
247 		*proto = strdup("ssh");
248 		if (proto == NULL) {
249 			err = got_error_from_errno("strdup");
250 			goto done;
251 		}
252 		s = (char *)uri;
253 		q = strchr(s, ':');
254 		if (q == NULL) {
255 			err = got_error(GOT_ERR_PARSE_URI);
256 			goto done;
257 		}
258 		/* No slashes allowed before first colon. */
259 		p = strchr(s, '/');
260 		if (p && q > p) {
261 			err = got_error(GOT_ERR_PARSE_URI);
262 			goto done;
263 		}
264 		*host = strndup(s, q - s);
265 		if (*host == NULL) {
266 			err = got_error_from_errno("strndup");
267 			goto done;
268 		}
269 		p = q + 1;
270 	} else {
271 		*proto = strndup(uri, p - uri);
272 		if (proto == NULL) {
273 			err = got_error_from_errno("strndup");
274 			goto done;
275 		}
276 		s = p + 3;
277 
278 		p = strstr(s, "/");
279 		if (p == NULL || strlen(p) == 1) {
280 			err = got_error(GOT_ERR_PARSE_URI);
281 			goto done;
282 		}
283 
284 		q = memchr(s, ':', p - s);
285 		if (q) {
286 			*host = strndup(s, q - s);
287 			if (*host == NULL) {
288 				err = got_error_from_errno("strndup");
289 				goto done;
290 			}
291 			*port = strndup(q + 1, p - (q + 1));
292 			if (*port == NULL) {
293 				err = got_error_from_errno("strndup");
294 				goto done;
295 			}
296 		} else {
297 			*host = strndup(s, p - s);
298 			if (*host == NULL) {
299 				err = got_error_from_errno("strndup");
300 				goto done;
301 			}
302 		}
303 	}
304 
305 	*server_path = strdup(p);
306 	if (*server_path == NULL) {
307 		err = got_error_from_errno("strdup");
308 		goto done;
309 	}
310 
311 	p = strrchr(p, '/');
312 	if (!p || strlen(p) <= 1) {
313 		err = got_error(GOT_ERR_PARSE_URI);
314 		goto done;
315 	}
316 	p++;
317 	n = strlen(p);
318 	if (n == 0) {
319 		err = got_error(GOT_ERR_PARSE_URI);
320 		goto done;
321 	}
322 	if (hassuffix(p, ".git"))
323 		n -= 4;
324 	*repo_name = strndup(p, (p + n) - p);
325 	if (*repo_name == NULL) {
326 		err = got_error_from_errno("strndup");
327 		goto done;
328 	}
329 done:
330 	if (err) {
331 		free(*proto);
332 		*proto = NULL;
333 		free(*host);
334 		*host = NULL;
335 		free(*port);
336 		*port = NULL;
337 		free(*server_path);
338 		*server_path = NULL;
339 		free(*repo_name);
340 		*repo_name = NULL;
341 	}
342 	return err;
343 }
344 
345 static const struct got_error *
346 check_pack_hash(int fd, size_t sz, uint8_t *hcomp)
347 {
348 	SHA1_CTX ctx;
349 	uint8_t hexpect[SHA1_DIGEST_LENGTH];
350 	uint8_t buf[32 * 1024];
351 	ssize_t n, r, nr;
352 
353 	if (sz < sizeof(struct got_packfile_hdr) + SHA1_DIGEST_LENGTH)
354 		return got_error_msg(GOT_ERR_BAD_PACKFILE, "short packfile");
355 
356 	n = 0;
357 	SHA1Init(&ctx);
358 	while (n < sz - 20) {
359 		nr = sizeof(buf);
360 		if (sz - n - 20 < sizeof(buf))
361 			nr = sz - n - 20;
362 		r = read(fd, buf, nr);
363 		if (r == -1)
364 			return got_error_from_errno("read");
365 		if (r != nr)
366 			return got_error_msg(GOT_ERR_BAD_PACKFILE,
367 			    "short pack file");
368 		SHA1Update(&ctx, buf, nr);
369 		n += r;
370 	}
371 	SHA1Final(hcomp, &ctx);
372 
373 	r = read(fd, hexpect, sizeof(hexpect));
374 	if (r == -1)
375 		return got_error_from_errno("read");
376 	if (r != sizeof(hexpect))
377 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
378 		    "short pack file");
379 
380 	if (memcmp(hcomp, hexpect, SHA1_DIGEST_LENGTH) != 0)
381 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
382 		    "packfile checksum mismatch");
383 
384 	return NULL;
385 }
386 
387 const struct got_error*
388 got_fetch_pack(struct got_object_id **pack_hash, struct got_pathlist_head *refs,
389     struct got_pathlist_head *symrefs, const char *remote_name,
390     int mirror_references, int fetchfd, struct got_repository *repo,
391     got_fetch_progress_cb progress_cb, void *progress_arg)
392 {
393 	int imsg_fetchfds[2], imsg_idxfds[2];
394 	int packfd = -1, npackfd = -1, idxfd = -1, nidxfd = -1, nfetchfd = -1;
395 	int tmpfds[3], i;
396 	int fetchstatus, idxstatus, done = 0;
397 	const struct got_error *err;
398 	struct imsgbuf fetchibuf, idxibuf;
399 	pid_t fetchpid, idxpid;
400 	char *tmppackpath = NULL, *tmpidxpath = NULL;
401 	char *packpath = NULL, *idxpath = NULL, *id_str = NULL;
402 	const char *repo_path = got_repo_get_path_git_dir(repo);
403 	struct got_pathlist_head have_refs;
404 	struct got_pathlist_entry *pe;
405 	struct got_reflist_head my_refs;
406 	struct got_reflist_entry *re;
407 	off_t packfile_size = 0;
408 	char *ref_prefix = NULL;
409 	size_t ref_prefixlen = 0;
410 	char *path;
411 	char *progress = NULL;
412 
413 	*pack_hash = NULL;
414 	for (i = 0; i < nitems(tmpfds); i++)
415 		tmpfds[i] = -1;
416 
417 	TAILQ_INIT(&have_refs);
418 	SIMPLEQ_INIT(&my_refs);
419 
420 	if (!mirror_references) {
421 		if (asprintf(&ref_prefix, "refs/remotes/%s/",
422 		    remote_name) == -1)
423 			return got_error_from_errno("asprintf");
424 		ref_prefixlen = strlen(ref_prefix);
425 	}
426 
427 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
428 	if (err)
429 		goto done;
430 
431 	SIMPLEQ_FOREACH(re, &my_refs, entry) {
432 		struct got_object_id *id;
433 		const char *refname;
434 
435 		if (got_ref_is_symbolic(re->ref))
436 			continue;
437 
438 		refname = got_ref_get_name(re->ref);
439 
440 		if (mirror_references) {
441 			char *name;
442 			err = got_ref_resolve(&id, repo, re->ref);
443 			if (err)
444 				goto done;
445 			name = strdup(refname);
446 			if (name == NULL) {
447 				err = got_error_from_errno("strdup");
448 				goto done;
449 			}
450 			err = got_pathlist_append(&have_refs, name, id);
451 			if (err)
452 				goto done;
453 			continue;
454 		}
455 
456 		if (strncmp("refs/tags/", refname, 10) == 0) {
457 			char *tagname;
458 
459 			err = got_ref_resolve(&id, repo, re->ref);
460 			if (err)
461 				goto done;
462 			tagname = strdup(refname);
463 			if (tagname == NULL) {
464 				err = got_error_from_errno("strdup");
465 				goto done;
466 			}
467 			err = got_pathlist_append(&have_refs, tagname, id);
468 			if (err) {
469 				free(tagname);
470 				goto done;
471 			}
472 		}
473 
474 		if (strncmp(ref_prefix, refname, ref_prefixlen) == 0) {
475 			char *branchname;
476 
477 			err = got_ref_resolve(&id, repo, re->ref);
478 			if (err)
479 				goto done;
480 
481 			if (asprintf(&branchname, "refs/heads/%s",
482 			    refname + ref_prefixlen) == -1) {
483 				err = got_error_from_errno("asprintf");
484 				goto done;
485 			}
486 			err = got_pathlist_append(&have_refs, branchname, id);
487 			if (err) {
488 				free(branchname);
489 				goto done;
490 			}
491 		}
492 	}
493 
494 	if (asprintf(&path, "%s/%s/fetching.pack",
495 	    repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
496 		err = got_error_from_errno("asprintf");
497 		goto done;
498 	}
499 	err = got_opentemp_named_fd(&tmppackpath, &packfd, path);
500 	free(path);
501 	if (err)
502 		goto done;
503 	npackfd = dup(packfd);
504 	if (npackfd == -1) {
505 		err = got_error_from_errno("dup");
506 		goto done;
507 	}
508 	if (asprintf(&path, "%s/%s/fetching.idx",
509 	    repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
510 		err = got_error_from_errno("asprintf");
511 		goto done;
512 	}
513 	err = got_opentemp_named_fd(&tmpidxpath, &idxfd, path);
514 	free(path);
515 	if (err)
516 		goto done;
517 	nidxfd = dup(idxfd);
518 	if (nidxfd == -1) {
519 		err = got_error_from_errno("dup");
520 		goto done;
521 	}
522 
523 	for (i = 0; i < nitems(tmpfds); i++) {
524 		tmpfds[i] = got_opentempfd();
525 		if (tmpfds[i] == -1) {
526 			err = got_error_from_errno("got_opentempfd");
527 			goto done;
528 		}
529 	}
530 
531 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fetchfds) == -1) {
532 		err = got_error_from_errno("socketpair");
533 		goto done;
534 	}
535 
536 	fetchpid = fork();
537 	if (fetchpid == -1) {
538 		err = got_error_from_errno("fork");
539 		goto done;
540 	} else if (fetchpid == 0){
541 		got_privsep_exec_child(imsg_fetchfds,
542 		    GOT_PATH_PROG_FETCH_PACK, tmppackpath);
543 	}
544 
545 	if (close(imsg_fetchfds[1]) != 0) {
546 		err = got_error_from_errno("close");
547 		goto done;
548 	}
549 	imsg_init(&fetchibuf, imsg_fetchfds[0]);
550 	nfetchfd = dup(fetchfd);
551 	if (nfetchfd == -1) {
552 		err = got_error_from_errno("dup");
553 		goto done;
554 	}
555 	err = got_privsep_send_fetch_req(&fetchibuf, nfetchfd, &have_refs);
556 	if (err != NULL)
557 		goto done;
558 	nfetchfd = -1;
559 	err = got_privsep_send_fetch_outfd(&fetchibuf, npackfd);
560 	if (err != NULL)
561 		goto done;
562 	npackfd = dup(packfd);
563 	if (npackfd == -1) {
564 		err = got_error_from_errno("dup");
565 		goto done;
566 	}
567 
568 	packfile_size = 0;
569 	progress = calloc(GOT_FETCH_PKTMAX, 1);
570 	if (progress == NULL) {
571 		err = got_error_from_errno("calloc");
572 		goto done;
573 	}
574 	while (!done) {
575 		struct got_object_id *id = NULL;
576 		char *refname = NULL;
577 		char *server_progress = NULL;
578 		off_t packfile_size_cur = 0;
579 
580 		err = got_privsep_recv_fetch_progress(&done,
581 		    &id, &refname, symrefs, &server_progress,
582 		    &packfile_size_cur, &fetchibuf);
583 		if (err != NULL)
584 			goto done;
585 		if (done) {
586 			if (packfile_size > 0)
587 				*pack_hash = id;
588 			else
589 				free(id);
590 		} else if (refname && id) {
591 			err = got_pathlist_append(refs, refname, id);
592 			if (err)
593 				goto done;
594 		} else if (server_progress) {
595 			char *p;
596 			/*
597 			 * XXX git-daemon tends to send batched output with
598 			 * lines spanning separate packets. Buffer progress
599 			 * output until we see a CR or LF to avoid giving
600 			 * partial lines of progress output to the callback.
601 			 */
602 			if (strlcat(progress, server_progress,
603 			    GOT_FETCH_PKTMAX) >= GOT_FETCH_PKTMAX) {
604 				progress[0] = '\0'; /* discard */
605 				continue;
606 			}
607 			while ((p = strchr(progress, '\r')) != NULL ||
608 			    (p = strchr(progress, '\n')) != NULL) {
609 				char *s;
610 				size_t n;
611 				char c = *p;
612 				*p = '\0';
613 				if (asprintf(&s, "%s%s", progress,
614 				    c == '\n' ? "\n" : "") == -1) {
615 					err = got_error_from_errno("asprintf");
616 					goto done;
617 				}
618 				err = progress_cb(progress_arg, s,
619 				    packfile_size_cur, 0, 0, 0, 0);
620 				free(s);
621 				if (err)
622 					break;
623 				n = strlen(progress);
624 				if (n < GOT_FETCH_PKTMAX - 1) {
625 					memmove(progress, &progress[n + 1],
626 					    GOT_FETCH_PKTMAX - n - 1);
627 				} else
628 					progress[0] = '\0';
629 			}
630 			free(server_progress);
631 			if (err)
632 				goto done;
633 		} else if (packfile_size_cur != packfile_size) {
634 			err = progress_cb(progress_arg, NULL,
635 			    packfile_size_cur, 0, 0, 0, 0);
636 			if (err)
637 				break;
638 			packfile_size = packfile_size_cur;
639 		}
640 	}
641 	if (waitpid(fetchpid, &fetchstatus, 0) == -1) {
642 		err = got_error_from_errno("waitpid");
643 		goto done;
644 	}
645 
646 	/* If zero data was fetched without error we are already up-to-date. */
647 	if (packfile_size == 0)
648 		goto done;
649 
650 	if (lseek(packfd, 0, SEEK_SET) == -1) {
651 		err = got_error_from_errno("lseek");
652 		goto done;
653 	}
654 	err = check_pack_hash(packfd, packfile_size, (*pack_hash)->sha1);
655 	if (err)
656 		goto done;
657  
658 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_idxfds) == -1) {
659 		err = got_error_from_errno("socketpair");
660 		goto done;
661 	}
662 	idxpid = fork();
663 	if (idxpid == -1) {
664 		err= got_error_from_errno("fork");
665 		goto done;
666 	} else if (idxpid == 0)
667 		got_privsep_exec_child(imsg_idxfds,
668 		    GOT_PATH_PROG_INDEX_PACK, tmppackpath);
669 	if (close(imsg_idxfds[1]) != 0) {
670 		err = got_error_from_errno("close");
671 		goto done;
672 	}
673 	imsg_init(&idxibuf, imsg_idxfds[0]);
674 
675 	err = got_privsep_send_index_pack_req(&idxibuf, (*pack_hash)->sha1,
676 	    npackfd);
677 	if (err != NULL)
678 		goto done;
679 	npackfd = -1;
680 	err = got_privsep_send_index_pack_outfd(&idxibuf, nidxfd);
681 	if (err != NULL)
682 		goto done;
683 	nidxfd = -1;
684 	for (i = 0; i < nitems(tmpfds); i++) {
685 		err = got_privsep_send_tmpfd(&idxibuf, tmpfds[i]);
686 		if (err != NULL)
687 			goto done;
688 		tmpfds[i] = -1;
689 	}
690 	done = 0;
691 	while (!done) {
692 		int nobj_total, nobj_indexed, nobj_loose, nobj_resolved;
693 
694 		err = got_privsep_recv_index_progress(&done, &nobj_total,
695 		    &nobj_indexed, &nobj_loose, &nobj_resolved,
696 		    &idxibuf);
697 		if (err != NULL)
698 			goto done;
699 		if (nobj_indexed != 0) {
700 			err = progress_cb(progress_arg, NULL,
701 			    packfile_size, nobj_total,
702 			    nobj_indexed, nobj_loose, nobj_resolved);
703 			if (err)
704 				break;
705 		}
706 		imsg_clear(&idxibuf);
707 	}
708 	if (close(imsg_idxfds[0]) == -1) {
709 		err = got_error_from_errno("close");
710 		goto done;
711 	}
712 	if (waitpid(idxpid, &idxstatus, 0) == -1) {
713 		err = got_error_from_errno("waitpid");
714 		goto done;
715 	}
716 
717 	err = got_object_id_str(&id_str, *pack_hash);
718 	if (err)
719 		goto done;
720 	if (asprintf(&packpath, "%s/%s/pack-%s.pack",
721 	    repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
722 		err = got_error_from_errno("asprintf");
723 		goto done;
724 	}
725 
726 	if (asprintf(&idxpath, "%s/%s/pack-%s.idx",
727 	    repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
728 		err = got_error_from_errno("asprintf");
729 		goto done;
730 	}
731 
732 	if (rename(tmppackpath, packpath) == -1) {
733 		err = got_error_from_errno3("rename", tmppackpath, packpath);
734 		goto done;
735 	}
736 	free(tmppackpath);
737 	tmppackpath = NULL;
738 	if (rename(tmpidxpath, idxpath) == -1) {
739 		err = got_error_from_errno3("rename", tmpidxpath, idxpath);
740 		goto done;
741 	}
742 	free(tmpidxpath);
743 	tmpidxpath = NULL;
744 
745 done:
746 	if (tmppackpath && unlink(tmppackpath) == -1 && err == NULL)
747 		err = got_error_from_errno2("unlink", tmppackpath);
748 	if (tmpidxpath && unlink(tmpidxpath) == -1 && err == NULL)
749 		err = got_error_from_errno2("unlink", tmpidxpath);
750 	if (nfetchfd != -1 && close(nfetchfd) == -1 && err == NULL)
751 		err = got_error_from_errno("close");
752 	if (npackfd != -1 && close(npackfd) == -1 && err == NULL)
753 		err = got_error_from_errno("close");
754 	if (packfd != -1 && close(packfd) == -1 && err == NULL)
755 		err = got_error_from_errno("close");
756 	if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
757 		err = got_error_from_errno("close");
758 	for (i = 0; i < nitems(tmpfds); i++) {
759 		if (tmpfds[i] != -1 && close(tmpfds[i]) == -1 && err == NULL)
760 			err = got_error_from_errno("close");
761 	}
762 	free(tmppackpath);
763 	free(tmpidxpath);
764 	free(idxpath);
765 	free(packpath);
766 	free(ref_prefix);
767 	free(progress);
768 
769 	TAILQ_FOREACH(pe, &have_refs, entry) {
770 		free((char *)pe->path);
771 		free(pe->data);
772 	}
773 	got_pathlist_free(&have_refs);
774 	got_ref_list_free(&my_refs);
775 	if (err) {
776 		free(*pack_hash);
777 		*pack_hash = NULL;
778 		TAILQ_FOREACH(pe, refs, entry) {
779 			free((void *)pe->path);
780 			free(pe->data);
781 		}
782 		got_pathlist_free(refs);
783 		TAILQ_FOREACH(pe, symrefs, entry) {
784 			free((void *)pe->path);
785 			free(pe->data);
786 		}
787 		got_pathlist_free(symrefs);
788 	}
789 	return err;
790 }